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The formation of the Amazon Basin influenced the distribution of manatees


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IMAGE: Erica Martinho, first author of the article. Manatees first split from their common ancestor after geological events isolated the South American region from the sea. The African species may have.
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Credit: Erica Martinho
All three species of manatee now present on Earth share a common ancestor from which they split some 6.5 million years ago, when a huge lake in Amazonia, then linked to the Caribbean, was cut off from the sea. The African manatee
Trichechus senegalensis is not as genetically close to the West Indian manatee
T. manatus as was thought, and adaptation to this complex environment by the Amazonian manatee ....

Amazon Basin , Brazil General , United States , Minas Gerais , Mariana Freitas Nery , University Of Minas Gerais , Paulo Research Foundation , Institute Of Sustainable Development In Amazonas , Institute Of Biology , International Union For Conservation Of Nature , University Of Campinas , West Indian , Scientific Reports , Lake Pebas , Young Investigator Grant , Sustainable Development , Federal University , Martinha Silva De Souza , South America , Western Amazon , International Union , அமேசான் பேசின் , பிரேசில் ஜநரல் , ஒன்றுபட்டது மாநிலங்களில் , மினாஸ் கெரைச் , பல்கலைக்கழகம் ஆஃப் மினாஸ் கெரைச் ,

Use of perovskite will be a key feature of the next generation of electronic appliances


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IMAGE: Nanomaterials of perovskite dispersed in hexane and irradiated by laser. Light emission by these materials is intense thanks to resistance to surface defects
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Credit: Luiz Gustavo Bonato
Quantum dots are manmade nanoparticles of semiconducting material comprising only a few thousand atoms. Because of the small number of atoms, a quantum dot s properties lie between those of single atoms or molecules and bulk material with a huge number of atoms. By changing the nanoparticles size and shape, it is possible to fine-tune their electronic and optical properties - how electrons bond and move through the material, and how light is absorbed and emitted by it. ....

Rio Grande Do Sul , United States , Luiz Gustavo Bonato , Steven Cundiff , Diogo Almeida , University Of Michigan , Physics Institutes Of The University Campinas , Chemistry Institute , Engineering Research Center , Paulo Research Foundation , Research Division , Research Grant , Physics Institutes , Padilha Junior , Young Investigator Grant , Regular Research Grant , New Energies , Chemistry Physics Materials Sciences , Superconductors Semiconductors , Nanotechnology Micromachines , Particle Physics , ரியோ கிராண்டே செய் சூழ் , ஒன்றுபட்டது மாநிலங்களில் , ஸ்டீவன் கன்டிஃப் , டியோகோ அல்மேடா , பல்கலைக்கழகம் ஆஃப் மிச்சிகன் ,

Behavior of wild capuchin monkeys can be identified by marks left on their tools


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IMAGE: Stone tools are used for digging, seed pounding, and stone-on-stone percussion. The monkeys can serve as a model to help understand how humans evolved to use tools
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Credit: Tiago Falótico/EACH-USP
A group of researchers including Tiago Falótico, a Brazilian primatologist at the University of São Paulo s School of Arts, Sciences and Humanities (EACH-USP), archeologists at Spain s Catalan Institute of Human Paleoecology and Social Evolution (IPHES) and University College London in the UK, and an anthropologist at the Max Planck Institute for Evolutionary Anthropology in Germany, have published an article in the
Journal of Archeological Science: Reports describing an analysis of stone tools used by bearded capuchin monkeys (Sapajus libidinosus) that inhabit Serra da Capivara National Park in Piauí State, Brazil. It is the first systematic study to characterize the tools used by capuchin monkeys living in the wild. ....

Serra Da Capivara , United Kingdom , Tiago Fal , University College London , Max Planck Institute For Evolutionary Anthropology , Paulo Research Foundation , Spain Catalan Institute Of Human Paleoecology , Serra Da Capivara National Park In Piau , Paulo School Of Arts , Catalan Institute , Human Paleoecology , Social Evolution , Max Planck Institute , Evolutionary Anthropology , Archeological Science , Capivara National Park , Young Investigator Grant , Young Investigator , Ecology Environment , Nutrition Nutrients , Population Biology , Zoology Veterinary Science , செர்ரா டா சாப்பிவர , ஒன்றுபட்டது கிஂக்டம் , தியகோ ஃப்யால் , பல்கலைக்கழகம் கல்லூரி லண்டன் ,